# SDR SWAA2025012788097

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2025
- Submitted: January 27, 2025
- Operation: Air carrier
- Aircraft: [N8550Q](https://openairdocs.org/aircraft/N8550Q), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 63579
- Aircraft time: 23,501 hours, 12,000 cycles
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Detection Sys
- Condition: Out Of Tolerance
- Location: Zone 500
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025012788097

## Discrepancy

LEFT WING TO BODY OVERHEAT LIGHT ILLUMINATED DURING CLIMB. RAN QRH - LIGHT STAYED ILLUMINATED. LIGHT FLICKERED IN DESCENT AND EVENTUALLY EXTINGUISHED DURING ARRIVAL.<[01] T/S PER FIM 26-18 TASK 802 FOUND BITE CODE 14 STORED IN MEMORY. FOUND NO LEAKS OR EVIDENCE OF LEAKS ON LH LE BLEED. FOUND VOLTAGE OUT OF SPECIAL ON DETECTOR M268. R/R IAW AMM 26-18-02. OPS CK GOOD.;[02] SPECIAL SHOULD BE SPEC

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